#include<bits/stdc++.h>
using namespace std;
map<int,int> m;
int main(){
    freopen("duel.in","r",stdin);
    freopen("duel.out","w",stdout);
    int n,ans=0;
    scanf("%d",&n);
    for(int i=1;i<=n;i++){
        int x;
        scanf("%d",&x);
        m[x]++;
        ans=max(ans,m[x]);
    }
    printf("%d\n",ans);
    return 0;
}
